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import tuned.consts as consts from . import base import tuned.logs import os from subprocess import Popen, PIPE log = tuned.logs.get() class ScriptPlugin(base.Plugin): """ `script`:: Executes an external script or binary when the profile is loaded or unloaded. You can choose an arbitrary executable. + IMPORTANT: The `script` plug-in is provided mainly for compatibility with earlier releases. Prefer other *TuneD* plug-ins if they cover the required functionality. + *TuneD* calls the executable with one of the following arguments: + -- ** `start` when loading the profile ** `stop` when unloading the profile -- + You need to correctly implement the `stop` action in your executable and revert all settings that you changed during the `start` action. Otherwise, the roll-back step after changing your *TuneD* profile will not work. + Bash scripts can import the [filename]`/usr/lib/tuned/functions` Bash library and use the functions defined there. Use these functions only for functionality that is not natively provided by *TuneD*. If a function name starts with an underscore, such as `_wifi_set_power_level`, consider the function private and do not use it in your scripts, because it might change in the future. + Specify the path to the executable using the `script` parameter in the plug-in configuration. + .Running a Bash script from a profile ==== To run a Bash script named `script.sh` that is located in the profile directory, use: ---- [script] script=${i:PROFILE_DIR}/script.sh ---- ==== """ @classmethod def _get_config_options(self): return { "script" : None, } def _instance_init(self, instance): instance._has_static_tuning = True instance._has_dynamic_tuning = False if instance.options["script"] is not None: # FIXME: this hack originated from profiles merger assert isinstance(instance.options["script"], list) instance._scripts = instance.options["script"] else: instance._scripts = [] def _instance_cleanup(self, instance): pass def _call_scripts(self, scripts, arguments): ret = True for script in scripts: environ = os.environ environ.update(self._variables.get_env()) log.info("calling script '%s' with arguments '%s'" % (script, str(arguments))) log.debug("using environment '%s'" % str(list(environ.items()))) try: proc = Popen([script] + arguments, \ stdout=PIPE, stderr=PIPE, \ close_fds=True, env=environ, \ universal_newlines = True, \ cwd = os.path.dirname(script)) out, err = proc.communicate() if len(err): log.error("script '%s' error output: '%s'" % (script, err[:-1])) if proc.returncode: log.error("script '%s' returned error code: %d" % (script, proc.returncode)) ret = False except (OSError,IOError) as e: log.error("script '%s' error: %s" % (script, e)) ret = False return ret def _instance_apply_static(self, instance): super(ScriptPlugin, self)._instance_apply_static(instance) self._call_scripts(instance._scripts, ["start"]) def _instance_verify_static(self, instance, ignore_missing, devices): ret = True if super(ScriptPlugin, self)._instance_verify_static(instance, ignore_missing, devices) == False: ret = False args = ["verify"] if ignore_missing: args += ["ignore_missing"] if self._call_scripts(instance._scripts, args) == True: log.info(consts.STR_VERIFY_PROFILE_OK % instance._scripts) else: log.error(consts.STR_VERIFY_PROFILE_FAIL % instance._scripts) ret = False return ret def _instance_unapply_static(self, instance, rollback = consts.ROLLBACK_SOFT): args = ["stop"] if rollback == consts.ROLLBACK_FULL: args = args + ["full_rollback"] self._call_scripts(reversed(instance._scripts), args) super(ScriptPlugin, self)._instance_unapply_static(instance, rollback)
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